Question

rezolvare prin sistem de ecuatie

Answer 1

g = gaini

i = iepuri

g + i = 70

2g + 4i = 180

2g + 2i = 140

2g + 4i = 180

2i = 40 => i = 20

g = 70 - i = 70 - 20

g = 50

Answer 2

x numarul gainilor
y numarul iepurilor
x+y=70, x=70-y
2x+4y=180, 2(70-y)+4y=180, 140-2y+4y=180, 2y=40, y=20
x=70-y=70-20=50
raspuns 50 de gaini si 20 de iepuri